write a program in C
Write a function that is passed an array of characterscontaining letter grades of A, B, C, D, and F, and returns thetotal number of occurrences of each letter grade. Your functionshould accept both lower and upper case grades, for example, both'b' and 'B' should be bucketed into your running total for Bgrades. Any grade that is invalid should be bucketed as a grade of'I' for Incomplete. You must use a switch statement, and yourfunction should accept an array of any size. Feel free to pass inthe array size as a parameter so you know how many grade valuesyou'll need to check in your loop. For example, if you passed afunction the following array: char grades [ ] = {'A', 'b', 'C','x', 'D', 'c', 'F', 'B', 'Y', 'B', 'B', 'A'}; It would return thefollowing information within a structure (gradeTotals) to thecalling function. Grade Total --------- ------ A 2 B 4 C 2 D 1 F 1I 2 Hint: Design the function as: struct gradeTotals gradeCount(char gradeArray [ ], int arraySize)
